1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Find ef

  1. Mar 14, 2005 #1
    hey
    this is a new question
    N.B plz write how did u reached the answer
    question is in the attachment
     

    Attached Files:

  2. jcsd
  3. Mar 14, 2005 #2

    Doc Al

    User Avatar

    Staff: Mentor

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook